Before booking a United flight with your cat, confirm pet space on the exact itinerary and check the carrier requirements for the aircraft. The details below were checked against United’s pet policy on November 9, 2026. Reconfirm them before paying.
Cabin fee and minimum age
United lists a cabin pet fee of $150 each way. Cats must be at least two months old for domestic travel and four months old for international travel. Route and aircraft restrictions still apply.
Carrier measurements
The listed maximum dimensions are 17.5 inches long by 12 wide by 9 high for a hard-sided carrier, or 18 by 11 by 11 inches for a soft-sided carrier. United lists a 10-inch maximum carrier height for Boeing 737 MAX aircraft. Confirm the aircraft and fit for your flight.
Documents and cargo exceptions
United encourages a veterinary health certificate for domestic travel. It requires health and vaccination certificates for international flights, with rabies vaccination at least 28 days before international travel. Check destination rules too.
United’s pet guidance restricts cargo pet arrangements to certain eligible military and State Department travelers. Do not treat a cabin reservation as permission to send your cat unaccompanied.
Questions to settle before paying
- Is pet space available on every flight, including any connection?
- Does the selected seat and aircraft allow this carrier?
- Are there additional restrictions for the destination or number of pets?
- Which documents must be shown, and when must they be issued?
- What happens to the pet reservation if the flight or aircraft changes?
Ask United to confirm the booking process and check-in arrangements. Keep the confirmation with your travel records. Discuss your cat’s individual fitness for travel with your veterinarian; do not use an old breed-ban article as a current cabin rule.
Prepare for departure
Use the booking and airport guide for accompanied travel and the flight preparation guide for your cat’s routine.
For a ground journey, CitizenShipper connects owners with independent drivers offering cat transportation.
Adaeze Nwakaeze is a content writer with a knack for delivering engaging, informative content. With a background in writing, she excels at creating compelling pieces that capture her readers’ attention.
Content Writer at CitizenShipper. I’ve also been published on The Penny Hoarder, Mommy Poppins and mxdwn.
